Question

() The following frequency distribution table shows the marks obtained by 100
students.
Marks No of students
0-20 6
20-40 x
40-60. 46
60-80. x.
80-100 8
find the value of x

​

Answer 1

Answer:

20

Step-by-step explanation:

6+x+46+x+8=100

2x+60=100

2x=100-60

2x=40

x=40/2

x=20

Answer 2

Answer:

20

Step-by-step explanation:

Sum of frequency(Sigma F) = 100

Therefore, sigma F= 6+x+46+x+8

Sigma F=60+2x

100=60+2x

100-60=2x

40=2x

40/2=x

x=20

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